If you wish to add your company's stamp, you'll just need to follow the following steps:
1. Head over to Profiles > Manage My Database > Company Details.
2. Click on "Edit" on the top right.
3. Under "Update stamp", click on "Choose File".
4. Once uploaded, click on "Save" on the top right.
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How to show company stamp in payslips?
Under Profiles > Manage My Database > Company Details > Company Stamp, do ensure that you uncheck "Hide company stamp in payslip".
Once payroll is processed, company stamp will appear at the bottom right of payslips when you generate them.